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Thermionic Emission and Radioactivity — Physics STD 10 — Question

ICSE BoardEnglish MediumSTD 10PhysicsThermionic Emission and Radioactivity2 Marks
Question
What do you mean by electron emission?
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Answer

Free electrons leave the metal surface only if sufficient energy is supplied to the metal. This emission of electrons from metal surface is called the electron emission.

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